The BBC reported on Monday that U.S. President Donald Trump has sent a letter threatening legal action over the way a speech he made was edited in a documentary aired by the British broadcaster.

The BBC's top executive and its head of news both quit on Sunday over accusations of bias and misleading editing of a speech Trump delivered on Jan. 6, 2021, before a crowd of his supporters stormed the Capitol in Washington.

Asked about a letter from Trump threatening legal action over the incident, the BBC said in a statement on Monday that “we will review the letter and respond directly in due course.”

It did not provide further details.

Earlier, Trump welcomed the resignations of BBC Director-General Tim Davie and news chief Deborah Turness, saying the way his speech was edited was an attempt to “step on the scales of a Presidential Election.”

The hourlong documentary — titled “Trump: A Second Chance?” — was broadcast as part of the BBC's “Panorama” series days before the 2024 US presidential election.

It spliced together three quotes from two sections of the 2021 speech, delivered almost an hour apart, into what appeared to be one quote in which Trump urged supporters to march with him and “fight like hell."

Among the parts cut out was a section where Trump said he wanted supporters to demonstrate peacefully.

In a resignation letter to staff, Davie said: "There have been some mistakes made and as director-general I have to take ultimate responsibility.”

Turness said the controversy was damaging the BBC, and she quit “because the buck stops with me.”

Turness defended the organization's journalists against allegations of bias.

"Our journalists are hardworking people who strive for impartiality, and I will stand by their journalism," she said on Monday. “There is no institutional bias. Mistakes are made, but there’s no institutional bias.”

BBC chairman Samir Shah apologized on Monday for the broadcaster’s “error of judgment," saying the broadcaster “accept that the way the speech was edited did give the impression of a direct call for violent action.”

Trump posted a link to a Daily Telegraph story about the speech-editing on his Truth Social network, thanking the newspaper “for exposing these Corrupt 'Journalists.' These are very dishonest people who tried to step on the scales of a Presidential Election.” He called that "a terrible thing for Democracy!"

AP video by Kwiyeon Ha